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參數(shù)資料
| 型號(hào)： | AD1981BJST-REEL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 16/32頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CODEC STEREO MICPREAMP 48LQFP |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | SoundMAX® |
| 類型： | 音頻編解碼器 '97 |
| 數(shù)據(jù)接口： | 串行 |
| 分辨率（位）： | 16，20 b |
| ADC / DAC 數(shù)量： | 4 / 2 |
| 三角積分調(diào)變： | 無 |
| 動(dòng)態(tài)范圍，標(biāo)準(zhǔn) ADC / DAC (db)： | 85 / 90 |
| 電壓 - 電源，模擬： | 4.5 V ~ 5.5 V |
| 電壓 - 電源，數(shù)字： | 3 V ~ 3.47 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 48-LQFP |
| 供應(yīng)商設(shè)備封裝： | 48-LQFP（7x7） |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 其它名稱： | AD1981BJSTREELDKR |
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AD1981B
Rev. C | Page 23 of 32
Bit
Mnemonic
Function
SPCV
SPDIF Configuration Valid
(Read-Only)
This bit indicates the status of the SPDIF transmitter subsystem, enabling the driver to
determine if the currently programmed SPDIF configuration is supported. SPCV is always valid,
independent of the SPDIF enable bit status.
SPCV = 0 indicates that the current SPDIF configuration (SPSA, SPSR, DAC slot rate, DRS) is not
valid (not supported).
SPCV = 1 indicates that the current SPDIF configuration (SPSA, SPSR, DAC slot rate, DRS) is valid
(supported).
VFORCE
Validity Force Bit
(Reset Default = 0)
When asserted, this bit forces the SPDIF stream validity flag (Bit 28 within each SPDIF L/R
subframe) to be controlled by the V bit (D15) in Register 0x3A (SPDIF control register).
VFORCE = 0 and V = 0; the validity bit is managed by the codec error detection logic.
VFORCE = 0 and V = 1; the validity bit is forced high, indicating the subframe data is invalid.
VFORCE = 1 and V = 0; the validity bit is forced low, indicating the subframe data is valid.
VFORCE = 1 and V = 1; the validity bit is forced high, indicating the subframe data is invalid.
Table 32. AC ’97 2.2 AMAP-Compliant Default SPDIF Slot Assignments
Codec ID
Function
SPSA = 00
SPSA = 01
SPSA = 10
SPSA = 11
00
2-Channel Primary w/SPDIF
3 and 4
7 and 8 (default)
6 and 9
10 and 11
00
4-Channel Primary w/SPDIF
3 and 4
7 and 8
6 and 9 (default)
10 and 11
00
6-Channel Primary w/SPDIF
3 and 4
7 and 8
6 and 9
10 and 11 (default)
01
+2-Channel Secondary w/SPDIF
3 and 4
7 and 8
6 and 9 (default)
01
+4-Channel Secondary w/SPDIF
3 and 4
7 and 8
6 and 9
10 and 11 (default)
10
+2-Channel Secondary w/SPDIF
3 and 4
7 and 8
6 and 9 (default)
10
+4-Channel Secondary w/SPDIF
3 and 4
7 and 8
6 and 9
10 and 11 (default)
11
+2-Channel Secondary w/SPDIF
3 and 4
7 and 8
6 and 9
10 and 11 (default)
PCM FRONT DAC RATE REGISTER
Index 0x2C
Reg
No.
Name
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Default
0x2C
PCM
Front
DAC
Rate
SRF15
SRF14
SRF13
SRF12
SRF11
SRF10
SRF9
SRF8
SRF7
SRF6
SRF5
SRF4
SRF3
SRF2
SRF1
SRF0
0xBB80
This read/write sample rate control register contains a 16-bit unsigned value, representing the rate of operation in Hz.
Table 33.
Bit
Mnemonic
Function
SRF [15:0]
Sample Rate
The sampling frequency range is from 7 kHz (0x1B58) to 48 kHz (0xBB80) in 1 Hz increments. If 0 is written to
VRA, the sample rate is reset to 48 kHz.
PCM ADC RATE REGISTER
Index 0x32
Reg
No.
Name
D15
D14
D13
D12
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Default
0x32
PCM L/R
ADC
Rate
SRA15
SRA14
SRA13
SRA12
SRA11
SRA10
SRA9
SRA8
SRA7
SRA6
SRA5
SRA4
SRA3
SRA2
SRA1
SRA0
0xBB80
This read/write sample rate control register contains a 16-bit unsigned value, representing the rate of operation in Hz.
Table 34.
Bit
Mnemonic
Function
SRA
[15:0]
Sample Rate
The sampling frequency range is from 7 kHz (0x1B58) to 48 kHz (0xBB80) in 1 Hz increments. If 0 is written to
VRA, the sample rate is reset to 48 kHz.
OBSOLETE
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD1981BJSTZ | 制造商:Analog Devices 功能描述:IC AUDIO CODEC |
| AD1981BJSTZ1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:AC 97 SoundMAX Codec |
| AD1981BJSTZ2 | 制造商:AD 制造商全稱:Analog Devices 功能描述:AC ’97 SoundMAX Codec |
| AD1981BJSTZ-REEL | 制造商:Analog Devices 功能描述:Audio Codec 4ADC / 2DAC 20-Bit 48-Pin LQFP T/R 制造商:Rochester Electronics LLC 功能描述:AC'97 SOUNDMAX CODEC W/STEREO MIC PREAMP - Tape and Reel 制造商:Analog Devices 功能描述:IC AUDIO CODEC |
| AD1981BJSTZ-REEL2 | 制造商:AD 制造商全稱:Analog Devices 功能描述:AC ’97 SoundMAX Codec |
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